the act of being an adult; to do things your parents would normally do, but they aren't around, so now you have to do them whether you know how or not.
Today I adulted when I took out a loan for school without my parents being there.
Some consider adultery as a potentially dishonest sexualact, and use verbs such as commit. ie She committed adultery. Some consider adultery in the same sense as a greeting or a handshake, and simply behaving like an adult. Hence the word ADULTery.
1: Adults that think & behave like children. 2: People that have adult (mature) bodies, but child-like (immature) mindsets. 3: A "childish-psyche" within a adult's physical body. Etc.